Home / 78,725,958.15-118,080,964.09-21,224,041.95

Finding the Fourth Proportional to 78,725,958.15, 118,080,964.09 and 21,224,041.95

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Solution

The fourth proportional to 78,725,958.15, 118,080,964.09 and 21,224,041.95 is: 31,833,913.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,958.15 : 118,080,964.09 = 21,224,041.95 : x
  2. Step 2: Convert to fraction form
    78,725,958.15/118,080,964.09 = 21,224,041.95/x
  3. Step 3: Cross multiply
    78,725,958.15x = 118,080,964.09 × 21,224,041.95
  4. Step 4: Simplify right side
    78,725,958.15x = 2,506,155,335,289,543.50
  5. Step 5: Solve for x
    x = 2,506,155,335,289,543.50/78,725,958.15
  6. Step 6: Final answer
    x = 31,833,913.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.